Image icon  Phosphor bronze exhibiting cored dendrites.

 
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Description: The microstructures consists of cored dendrites of α phase (brown). The coring causes the concentration of tin in the liquid to increase. Thus instead of solidifying to pure α, the liquid transforms to α and β. The β transforms to α and γ and subsequently the γ transforms to α and δ giving the blueish region. Alloys such as this sometimes exhibit "tin sweat", which is a traditional name given to segregation in Cu-Sn alloys.
Keywords: alloy • bronze • copper • coring • dendrite • metal • tin
Categories: Science approaches > Microstructure
Materials > Metals & alloys > Copper & alloys
Testing, analysis & experimentation > Metallography
Scale > Micro
Created by: DoITPoMS, University of Cambridge
Dr R F Cochrane, Department of Materials, University of Leeds
Published by: DoITPoMS, University of Cambridge
License: This resource is released under the Creative Commons Attribution Non-Commercial Share Alike license (2.0 UK: England & Wales).
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Date created: 04 September 2002
Date added: 21 August 2009
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Resource ID: 1562